Let me start by saying, this sharpening stone is a beast. The first time I held it, the weight and build quality were immediately noticeable. The industrial-grade diamonds electroplated onto the steel base give it a premium feel that screams durability.

The dual-grit system (325 coarse / 1200 extra fine) is perfectly balanced. I used the coarse side to revive some seriously dull kitchen knives - we're talking 'couldn't cut butter' dull. Within minutes, I had a serviceable edge. Then flipping to the fine side brought them to scary sharp levels.

What surprised me most was how well it handles different materials. My carbon steel chef's knife, stainless pocket knives, even my wife's ceramic knife - all responded beautifully. The super flat surface (thanks to that MirrorFlat technology) makes consistent sharpening effortless.

The included case is genius. Not just for storage - that rubber base keeps everything rock-steady during use. I've tried sharpening on wobbly surfaces before; this eliminates all that frustration. The angle guide pyramid is handy too, though after some practice I found myself using it less.

A few things to note: It does produce metal dust (wear gloves if you're sensitive). And while Sharpal says you can use it dry, I found a spritz of water helps with cleanup. The stones do take a few uses to 'break in' - initial results were good but got even better after some use.

After months of regular use, there's no noticeable wear on the diamond surface - this thing is built to last. For anyone serious about keeping their tools sharp without the mess of oil/water stones, this is absolutely worth the investment.